s7e19 “Strange Bedfellows”
Worf has a real knack for this sort of thing.
If the last door is Weyoun 7 (pictured above), then 5 (background) had a mysterious “transport accident” (at the hands of Damar) and 6 (middle ground) was the traitor who died helping Odo.
Worf en route to the Weyoun cloning facility on Rondac III
This picture requires no context, it is amazing on its own.